Russian mercenary boss Yevgeny Prigozhin, who has been arguing with top military brass for months, on Friday escalated the feud by accusing pro-Moscow forces of trying to blow up his men. Prigozhin's Wagner Group troops have largely pulled back from the eastern Ukrainian town of Bakhmut, most of which they captured last month after taking heavy casualties, and handed over their positions to regular Russian forces. Prigozhin, writing on Telegram, said his men had discovered a dozen locations in rear areas where defense ministry officials had planted various explosive devices, including hundreds of anti-tank mines. When asked why the charges...